Beane's doing his thing. Do you want to pay top dollar for every player the bills sign? Never tip your hand.
If Beane saying he is short on spendable money gets players to sign here cheaper, good. The best free agent deals are never done on day 1.
But, I guarendamntee you that if a high profile/ high cost player Beane covets is available for a reasonable amount, more "spendable money" will magically appear.